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https://issues.apache.org/jira/browse/CASSANDRA-11739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15297025#comment-15297025
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Paulo Motta commented on CASSANDRA-11739:
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+1, rebased, addressed remaining nits and resubmitted CI tests (still running).
> Cache key references might cause OOM on incremental repair
> ----------------------------------------------------------
>
> Key: CASSANDRA-11739
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11739
> Project: Cassandra
> Issue Type: Bug
> Reporter: Paulo Motta
> Assignee: Paulo Motta
> Attachments: heapdump.png
>
>
> We keep {{SSTableReader}} references for the duration of the repair to
> anti-compact later, and their tidier keep references to cache keys to be
> invalidated which are only cleaned up by GC after repair is finished. These
> cache keys can accumulate while repair is being executed leading to OOM for
> large tables/keyspaces.
> Heap dump attached.
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